Cap-shaped contrivance for closing vessels or receptacles



R. LANDAU 1,722 637- CAP SHAPED CONTRIVANCE FOR CLOSING YESSELS OR RECEP'I'ACLES July 30, 1929.

Filed Oct. 20. 1927 WVE/Vroa Posse? l HWLW Patented J '30, 1929.

ROBERT LANDAU, VIENNA, AUSTRIA.

car-swan comrnrvancn roa oLosme .vnssnns on nncnrr acrna' -Application filed ctober20, 1927, Serial No. 227,474, 'and in Austria October ,22, 1926.

This invention relates to improvements in cap-shaped contrivances for closing vessels or receptacles, which consist of an elastic material whichcan be used any number-of times.

Known closing contrivances of this kind are provided with a jagged flange rim, the contracted parts of which engage a depression of the bottle neck and are temporarily deformed. Other closing contrivances are known in which depressions, for instance buttons or grooves, provided on the cylindric flan e of the contrivance cooperate with suitable rests, or with a contraction of the bottle neck, or directly rest on the smooth bottle neck. Y

vThe present invention relates to a capshaped contrivance for closing vessels or rlecegtacles and essentially consists in that t e resilient curved parts by means of one or more rests, for instance knobs, projections, grooves'or the like the said resilient curved parts being stretc ed within the limit of elasticity during the application of the contrivance to the smooth neck of the vessel or receptacle and thereby are pressed on to the said neck.

One mode ofcarrying out the present on the accompanying sheet 0 drawings in which-- y I r Figs. 1, 2 and 3 show in sectional elevation, plan view and cross-sectional view, respectively, a closing contrivance attached to a vessel.

Figs. 4 and 5 show in section and plan view, respectively, a tool for disenga ing the closing contrivance according to t e first construction.

The closing contrivance for vessels or receptacles consists of a cap formed by a bottom portion a: and a cyl-in'dric flange b. The diameter of the latter is slightly larger than the outside diameterof the thickened part of the neck 0! of the bottle 0, as it is indicated in dotted lines in Fig. 3. The flange b of the cap is furnished 'with inwardly directed depressions e, which are in the shape of knobs or rojections and are arranged at "equal distances apart around the circumference of the said flange or which are in the form ofcircumferential grooves. An oil paper or parchment paper g5 f and a cork disc 9 are arranged below the ange of the contrivance is divided into.

invention is illustrated by wa of example bottom of of the cap, in order to provide for an air-tight or gas-tight closure. The rim It of the cap is drawn inward and firmly grips the thickened part at of the bottle 0- in the o erative position.

The c osing contrivance is attached to and removed from the bottle in the following manner The contrivance is loosely placed upon the mouth of the bottles a and, by means of a blow or pressure applied to the bottom a of the ca is pushed so far down the thickened bott e'part at until the rim it of the' cap is disposed in the reduced part of the bottle o behind the said thickened art. The contrivance is already gas-tig tly secured to the bottle 0 by this simple operation. Before pushing down the contrivance, the distance between each pair of diametrically oppositedepressions e is smaller" than the diameter of the thickened part d, and on pushing down the contrivance the depressions e are radiall pressed apart, whereby the parts ofthe side wall, located between the depressions, are pressed against the part d of the bottle, as shown in Fig. 3. This deformation which takes place in a transverse direction of the contrivance causes a further deformation along the circumference of thefiange b, in that the contracted cap edge It resting in the reduced part of the receptacle 0 is pressed with a greater force against the receptacle owing to the stretching of the apex of the ,flange b. Thereduced or drawn-in border'k of the cap insures that the insertions f and g are tightly pressed against the mouth of the bottle.

The tool, illustrated in Figs. 4 and 5, is preferably used for disengaging the closing contrivance. The former consists of a strip 95 or' handle is, which is provided with a hole a. The'strip or handleis placed over the neck ofthe bottle in such a manner that the straight edge I of the handle hole '5 bears against and is supported by the stepped portion m of the vessel 0, while the curved edge rm of the handle hole 2' rests against the underside of the cap rim h. .Theclos- 'ing contrivance can be readily lifted 011? by an upward directed pressure, applied by grasping-the handle portion 001 the strip,

material for closing receptacles, including a flange provided with a plurality of 'pro ections widely spaced apart to divide said flange into a number of resilient curved parts which, during the application of the contrivance to the neck of a receptacle, are stretched, whereby the middle portion of each curved part is pressed on to said neck.

2. A cap-shaped contrivance for closin receptacles, as claimed inclaixn 1, in whicli said flange is of the same thickness as the bottom of the cap and'is provided with a contracted rim, the flange being circumferentially deformed and also bent through along its generatrix and adapted to have its contract-ed rim pressed with great force on to the, receptacle, whereby the bottom of the cap is bent inward and tightly pressed withgreat force on to the receptacle.

3. A cap-shaped contrivance of an elastic material for closing receptacles, including a flange provided with a single inwardly extending projection, the place of the remaining resilient curved part of the flange disposed opposite' the said projection being pressed on to the neck of a receptacle during the application of the contrivance to the 'said neck.

- 4. A cap-shaped 'contrivance for closing receptacles, as claimed in claim 3, in which said flange is of the same thickness as the bottom of the cap and is rovided with a contracted rim, the flange being circmni'ercntially deformed and also bent through along its g'eneratrix and adapted to have its voutracted rim pressed with great force, on to the receptacle, whereby the bottom of the cap is bent inward and tightly pressed with great force on to the receptacle.

In testimony whereof I have attired my signature.

ROBERT LANDAU 

